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    <title>CRS应答系统(学生端)</title>
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        <h1>CRS课堂应答系统 学生端</h1>
        <p class="lead">
（1） 改善课堂活动情况，增强课堂交互性。<br>
（2）及时统计和分析数据，反馈性强。<br>
（3）改善学习效果，提高学习成绩。</p>
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        <h1 id="dt_tip">CRS课堂应答系统 学生端</h1>
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<div class="" role="">等待教师端开始应答。。。</div>

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